<template>
    <!-- 登录页面的整体盒子 -->
    <div class="login-container">
        <!-- 登录的盒子 -->
        <div class="login-box">
            <!-- 标题的盒子 -->
            <div class="title-box"></div>
            <!-- 登录的表单区域 -->
            <el-form :model="loginForm" :rules="loginRules" ref="loginRef">
                <!-- 用户名 -->
                <el-form-item prop="username">
                    <el-input v-model="loginForm.username" placeholder="请输入用户名"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                    <el-input v-model="loginForm.password" type="password" placeholder="请输入密码" ></el-input>
                </el-form-item>
                <el-form-item>
                    <el-button type="primary" class="btn-login" @click="loginFn">登录</el-button>
                    <el-link type="info" @click="$router.push('/reg')">去注册</el-link>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
import { loginAPI } from '@/api'
import { mapMutations } from 'vuex'
export default {
  name: 'my-login',
  data () {
    return {
      // 登录表单的数据对象
      loginForm: {
        username: '',
        password: ''
      },
      // 登录表单的验证规则对象
      loginRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { pattern: /^[a-zA-Z0-9]{1,10}$/, message: '用户名必须是1-10的字母数字', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { pattern: /^\S{6,15}$/, message: '密码必须是6-15的非空字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 登录的点击事件
    ...mapMutations(['updateToken']),
    loginFn () {
      this.$refs.loginRef.validate(async valid => {
        if (valid) {
          // console.log(this.loginForm)
          const res = await loginAPI(this.loginForm)
          // console.log(res)
          if (res.data.code === 0) {
            // 弹出成功信息
            this.$message.success(res.data.message)
            // 保存token到vuex
            this.updateToken(res.data.token)
            this.$router.push('/')
          } else {
            // 登陆失败弹出失败信息
            this.$message.error(res.data.message)
          }
        } else {
          return false
        }
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login-container {
    background: url('../../assets/images/login_bg.jpg') center;
    background-size: cover;
    height: 100%;

    .login-box {
        width: 400px;
        height: 270px;
        background-color: #fff;
        border-radius: 3px;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        padding: 0 30px;
        box-sizing: border-box;

        .title-box {
            height: 60px;
            background: url('../../assets/images/login_title.png') center no-repeat;
        }

        .btn-login {
            width: 100%;
        }
    }
}
</style>
